wxxsd/upfiles/UEditor/_src/core/ajax.js

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/**
 * Created by .
 * User: taoqili
 * Date: 11-8-18
 * Time: 下午3:18
 * To change this template use File | Settings | File Templates.
 */
/**
 * ajax工具类
 */
UE.ajax = function() {
	return {
		/**
		 * 向url发送ajax请求
		 * @param url
		 * @param ajaxOptions
		 */
		request:function(url, ajaxOptions) {
            var ajaxRequest = creatAjaxRequest(),
                //是否超时
                timeIsOut = false,
                //默认参数
                defaultAjaxOptions = {
                    method:"POST",
                    timeout:5000,
                    async:true,
                    data:{},//需要传递对象的话只能覆盖
                    onsuccess:function() {
                    },
                    onerror:function() {
                    }
                };

			if (typeof url === "object") {
				ajaxOptions = url;
				url = ajaxOptions.url;
			}
			if (!ajaxRequest || !url) return;
			var ajaxOpts = ajaxOptions ? utils.extend(defaultAjaxOptions,ajaxOptions) : defaultAjaxOptions;

			var submitStr = json2str(ajaxOpts);  // { name:"Jim",city:"Beijing" } --> "name=Jim&city=Beijing"
			//如果用户直接通过data参数传递json对象过来，则也要将此json对象转化为字符串
			if (!utils.isEmptyObject(ajaxOpts.data)){
                submitStr += (submitStr? "&":"") + json2str(ajaxOpts.data);
			}
            //超时检测
            var timerID = setTimeout(function() {
                if (ajaxRequest.readyState != 4) {
                    timeIsOut = true;
                    ajaxRequest.abort();
                    clearTimeout(timerID);
                }
            }, ajaxOpts.timeout);

			var method = ajaxOpts.method.toUpperCase();
            var str = url + (url.indexOf("?")==-1?"?":"&") + (method=="POST"?"":submitStr+ "&noCache=" + +new Date);
			ajaxRequest.open(method, str, ajaxOpts.async);
			ajaxRequest.onreadystatechange = function() {
				if (ajaxRequest.readyState == 4) {
					if (!timeIsOut && ajaxRequest.status == 200) {